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Even though the 36-year-old has admitted to having a breast enlargement, top plastic surgeons told RadarOnline.com that she's definitely had more work done throughout the years.

Photo credit: Getty Images

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"Kourtney doesn't look like she's aging, and I suspect that she's had the help of a skillful plastic surgeon," said celebrity plastic surgeon Tony Youn, M.D., who has not treated Scott Disick's baby mama.

Photo credit: Getty Images

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"Her face looks wrinkle-free, possibly due to a combination of injections of Botox to her forehead and fillers like Juvederm into her wrinkles," he added.

Photo credit: Getty Images

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Looking at old pictures of Kourtney, another change is apparent — "I also believe that her lips have been subtly plumped up with a filler like Resylane," Dr. Youn said. "Overall she looks amazing!"

Photo credit: Getty Images

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Dr. Susan Evans, who has not treated Mason, Penlope, and Reign's mom, added that she may have had more work done to her face.

Photo credit: Getty Images

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"It appears that Kourtney has had rhinoplasty to straighten her nose," she said.

Photo credit: Getty Images

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"It also looks like she's had her cheek bones done and fillers under her eyes versus eye surgery," Dr. Evans added. "It appears she's also had a chin implant to address her previous double chin."

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"In addition to Botox on her forehead and eyebrows, she looks as if she's had her eyebrows thickened using Latisse to help them grow in longer and fuller," Dr. Harutyunan said.

Photo credit: Getty Images

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"Kourtney has also had dermal fillers in the cheeks for a more contoured and sculpted face, as opposed to the round face she had in this photo," Dr. Harutyunyan, who has not worked on Kardashian, claimed.

Photo credit: Getty Images

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"Her chin is also more narrow than it was, she's appeared to have a nose job and it looks as if she's had Juvederm injected into her upper lip to make it fuller."

kourtney-kardashian-plastic-surgery-doctors-01

kourtney-kardashian-plastic-surgery-doctors-14

Even though the 36-year-old has admitted to having a breast enlargement, top plastic surgeons told RadarOnline.com that she's definitely had more work done throughout the years.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-04

"Kourtney doesn't look like she's aging, and I suspect that she's had the help of a skillful plastic surgeon," said celebrity plastic surgeon Tony Youn, M.D., who has not treated Scott Disick's baby mama.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-03

"Her face looks wrinkle-free, possibly due to a combination of injections of Botox to her forehead and fillers like Juvederm into her wrinkles," he added.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-06

Looking at old pictures of Kourtney, another change is apparent — "I also believe that her lips have been subtly plumped up with a filler like Resylane," Dr. Youn said. "Overall she looks amazing!"

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-11

Dr. Susan Evans, who has not treated Mason, Penlope, and Reign's mom, added that she may have had more work done to her face.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-07

"It appears that Kourtney has had rhinoplasty to straighten her nose," she said.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-02

"It also looks like she's had her cheek bones done and fillers under her eyes versus eye surgery," Dr. Evans added. "It appears she's also had a chin implant to address her previous double chin."

kourtney-kardashian-plastic-surgery-doctors-13

kourtney-kardashian-plastic-surgery-doctors-10

"In addition to Botox on her forehead and eyebrows, she looks as if she's had her eyebrows thickened using Latisse to help them grow in longer and fuller," Dr. Harutyunan said.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-08

"Kourtney has also had dermal fillers in the cheeks for a more contoured and sculpted face, as opposed to the round face she had in this photo," Dr. Harutyunyan, who has not worked on Kardashian, claimed.

Photo credit: Getty Images

kourtney-kardashian-plastic-surgery-doctors-05

"Her chin is also more narrow than it was, she's appeared to have a nose job and it looks as if she's had Juvederm injected into her upper lip to make it fuller."